Improvement in grain-separators



CHASE & TIFFANY.

Grain Separator. No. 56,177. Patentd-July 10, 1866..

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NITE STATES PATENT OFFICE.

JOHN H. CHASE AND J. M. TIFFANY, ()F MONTGOMERY, ILLINOIS.

IMPROVEMENT IN GRAIN-SEPARATORS.

Specification forming part of Letters Patent No. 56,177, dated July 10,1866.

I To all whom it may concern Be it known that we, JOHN H. CHASE andJOSEPH M. TIFFANY, of Montgomery, in the county of Kane and State ofIllinois, have invented a new and useful Improvement in Machines forSeparating and Grading Grain; and we do hereby declare and make knownthat the following is a full, clear, and exact description of the same,reference being had to the accompanying drawings and the letters andfigures marked thereon, which form part of this specification.

The nature of our said invention consists in a novel machine whereby alloats, rye, and other grains or seeds may be separated and removed fromwheat, leaving the wheat free and unmixed, which at the same time sortsor grades the wheat itself into different grades or qualities, asdesired.

The principle upon which our said invention operates consists inseparating and sorting or grading the grain with reference to thetransverse diameter of the kernel; and to enable those skilled in theart to understand how to construct and use our invention, we willproceed to describe its construction and operation with particularity,making reference in so doing to the aforesaid drawings, in which- Figure1 represents a side elevation of our invention; Fig. 2, a longitudinalvertical.cen-

tral section thereof; Fig. 3, a transverse section of the same; and Fig.4 is a plan or top view, the cover being removed.

Similar letters of reference in the several figures denote the sameparts of our invention.

A represents the case or inclosure in which the operating parts of ourinvention are placed, which may, however, be supported upon an openframe, if desired.

B and 0 represent two cylinders of similar construction, arranged in aposition nearly horizontal, having a slight inclination,to facilitatethe passage of the grain through the same, as hereinafter mentioned.These cylinders are constructed of narrow longitudinal slats or stavessecured together by means of hoops, leaving narrow spaces between thesaid strips, extending from one end to the other. The diameter of thespaces between the said slats is intended to vary in the cylinders, the

diameter of said slots in the upper cylinder being greater than in thelower cylinder, and so on through the entire series of cylinders, ifmore than two he used. The said cylinders arerevolved by any suitablegearing or belting, as may be desired.

The grain to be subjected to this apparatus is introduced into one endof the upper cylinder through the hopper H, and theinclination of thecylinder causes the grain to pass along down to the opposite end, whilethe angles or longitudinal grooves directly over each of the slots insaid cylinder keep the kernels of the grain arranged lengthwise in thecylinder and in the said grooves, so that all kernels whose diameter isless than the diameter of the spaces a in the cylinder will fall throughinto' the conveyer D E, which carries them back and delivers them intothe hopper I, whence they pass into the lower cylinder, as shown. In themeantime the plump full kernels, being unable to pass through the spacesaforesaid, go out at the end of the cylinder, at b, and are deliveredthrough the spout F into any suitable receptacle. The grain which passedor dropped through the spaces in the cylinder B is directed into theconveyer by the side boards, K, as seen in Fig. 3, when it is carriedback by the revolution of the screw E, and delivered into the secondcylinder, 0, whose spaces are made narrower, so that in passing throughthis cylinder the larger and fuller kernels remain and pass out at 0into a spout, Gr, whence it is delivered into any suitable receiver, thesmaller kernels, grains, and seeds falling through into a drawer or boX,J.

If it is desired to continue the separation and grading of the grainstill further another cylinder may be added.

The said cylinders may be so constructed that the slats of wood or metalforming their convex surface may be adjusted so as to lie nearertogether or farther apart, thus rendering the narrow passages betweenthem narrower or wider, and adapting a single cylinder to differentgrades of grain. This adjustment could be made by inserting an extraslat in one case and by removing one in the other.

The said slots or narrow openings through the convex surface of thecylinder may be an ranged transversely or spirally, if desired, providedthe corresponding V-shaped grooves upon the interior of the cylinder bearranged in like manner, so as to cause all the grain in the cylindertolie lengthwise over and upon said passages.

Having described our invention, We will now specify what We claim anddesire to secure by Letters Patent.

We claim- In a grain-separating machine, one or more hollow cylindershaving narrow openings or passages in their convex surface, with Vshaped grooves upon the interior, corresponding with the direction ofsaid passages, so as to keep the kernels of grain in the cylinderlengthwise over the said passages, substantially as and for the purposesherein shown and described. 4

JOHN H. CHASE. J. M. TIFFANY. Witnesses: W. E. MARRs, J. W. HERTHEL.

